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<?php
namespace WPForms\Helpers;
use WP_Filesystem_Base; // phpcs:ignore WPForms.PHP.UseStatement.UnusedUseStatement
/**
* Class File.
*
* @since 1.6.5
*/
class File {
/**
* Remove UTF-8 BOM signature if it presents.
*
* @since 1.6.5
*
* @param string $str String to process.
*
* @return string
*/
public static function remove_utf8_bom( $str ): string {
if ( strpos( bin2hex( $str ), 'efbbbf' ) === 0 ) {
$str = substr( $str, 3 );
}
return $str;
}
/**
* Get current filesystem.
*
* @since 1.8.6
*
* @return WP_Filesystem_Base|null
*/
public static function get_filesystem() {
global $wp_filesystem;
// We have to start the buffer to prevent output
// when the file system is ssh/FTP but not configured.
ob_start();
if ( ! function_exists( 'request_filesystem_credentials' ) ) {
require_once ABSPATH . 'wp-admin/includes/file.php';
}
// The current page URL.
$url = home_url( esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ?? '' ) ) );
$credentials = request_filesystem_credentials( $url, '', false, false );
ob_end_clean();
if ( $credentials === false || ! WP_Filesystem( $credentials ) ) {
wpforms_log(
'WP_Filesystem Error',
'File system isn\'t configured.',
[ 'type' => [ 'error' ] ]
);
return null;
}
return $wp_filesystem;
}
/**
* Get file contents.
*
* @since 1.8.6
*
* @param string $file File path.
*
* @return string|false
*/
public static function get_contents( $file ) {
$filesystem = self::get_filesystem();
if (
! $filesystem
|| ! $filesystem->is_readable( $file )
|| $filesystem->is_dir( $file )
) {
return false;
}
return $filesystem->size( $file ) > 0 ? $filesystem->get_contents( $file ) : '';
}
/**
* Save file contents.
*
* @since 1.8.6
*
* @param string $file File path.
* @param string $content File content.
*
* @return bool
*/
public static function put_contents( $file, $content ): bool {
$filesystem = self::get_filesystem();
if ( ! $filesystem ) {
return false;
}
return $filesystem->put_contents( $file, $content );
}
/**
* Get cache directory path.
*
* @since 1.8.6
*
* @return string
*/
public static function get_cache_dir(): string {
static $cache_dir;
if ( $cache_dir ) {
/**
* Since wpforms_upload_dir() relies on hooks, and hooks can be added unpredictably,
* we need to cache the result of this method.
* Otherwise, it is the risk to save cache file to one dir and try to get from another.
*/
return $cache_dir;
}
$upload_dir = wpforms_upload_dir();
$upload_path = ! empty( $upload_dir['path'] )
? trailingslashit( wp_normalize_path( $upload_dir['path'] ) )
: trailingslashit( WP_CONTENT_DIR ) . 'uploads/wpforms/';
$cache_dir = $upload_path . 'cache/';
return $cache_dir;
}
}